Optical transmission system

Abstract

The present invention provides an optical transmission system that optically transmits an optical signal between a camera adaptor provided to a video camera and a base station provided at a position remote from the video camera. In the optical transmission system, the camera adaptor includes a control signal input unit that receives a control signal including a return signal component, a video selecting unit that outputs, to the exterior, the camera video signal component of the first electric signal of the return video signal component of the second electric signal based on a state of the return signal component, and a control signal separating unit that outputs the control signal other than the return signal component.

Description

TECHNICAL FIELD[0001]The present invention relates to an optical transmission system that transmits an optical signal between a camera adaptor provided to a video camera and a base station provided at a position remote from the video camera.BACKGROUND ART[0002]A video signal of video captured by a video camera is transmitted to a switcher via a transmission cable. Because it is difficult to transmit an electric signal without attenuation when the devices are positioned remote from the video camera, a camera adaptor provided to the video camera converts the electric signal into an optical signal, and transmits the converted optical signal via an optical transmission cable. Then, a base station provided to the remotely-located device converts the optical signal into the electric signal. As above, long distance transmission is conducted. The long distance transmission is usually bidirectional, and signals of video (hereinafter referred to as “return video”) employed by the switcher are...

AI Technical Summary

Benefits of technology

The patent text is related to a device or system that can operate in a more efficient and effective way. The technical effects of the patent text may include improved performance, reliability, or efficiency of the device or system.

Problems solved by technology

Because it is difficult to transmit an electric signal without attenuation when the devices are positioned remote from the video camera, a camera adaptor provided to the video camera converts the electric signal into an optical signal, and transmits the converted optical signal via an optical transmission cable.

Although the less expensive camera is capable of providing high quality video, the camera fails to receive the return video by a main body thereof because the camera is not designed with consideration of broadcast use.

Thus, it has not been possible to use the less expensive video camera for broadcasting even though the video camera provides sufficient quality video.

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